stroked383HSR

iTrader: (12)

got a question for ya,

Ive got the quad tip borla exhaust and Im wanting to put a DMH electric cutout in place of the plate.

did you guys use a 3" 3.5" or 4?

Ive been reading the 3" is actually 2 3/4 opening and I dont want any kind of obstruction. So if i get the 3.5" or even the 4" DMH will the bolt holes still line up? so there is nothing in the way of flow

I8UR4RD

iTrader: (16)

all i will say is good luck Getting in touch with DMH

stroked383HSR

iTrader: (12)

oh yeah i know...Ive done a search on and found out he doesnt answer his phone and ive already tried calling for a day straight, every 10mins.

stroked383HSR

iTrader: (12)

anyone?

raysadude

iTrader: (11)

I got borla with dmh 3" cutout before the axle, right under the passenger side rear seat. Believe it or not I actually gained power with cutout open, not much only around 9rwhp but still nice

stroked383HSR

iTrader: (12)

hmm....so you didnt put the cutout where the plate usually goes?

peterlawl84

iTrader: (12)

He sells one specially for the borla plates, I have it and love it. I believe it's the 3". But if you go one his website, it should be the only one listed as "borla" cutout. He can sometimes be hard to reach, I know when I ordered mine he was dealing with his father being sick.

stroked383HSR

iTrader: (12)

thanks for the reply...

yeah...I keep calling his number and nothing.

So how much does the cutout cause the passenger tip to stick out? it is that noticeable? got any pictures of it?

peterlawl84

iTrader: (12)

It stuck the driver's side out about 1/4", just have to adjust the passenger side out alittle.
It is not very noticeable since the tips are tucked in nicely to the bumper...so you would have to be specifically comparing side to side to notice.

Here are a some pics of mine:

raysadude

iTrader: (11)

nope, i figured it's almost like when they created the gen 4 fbody they save that space under the rear passenger seat just for the cutout.

any specific reason why would you want the cutout to be where the plate is?

peterlawl84

iTrader: (12)

It is the one advantage of getting the adjustable catback system over any other catback out there, you can adjust the sound be determining how much flows thru the muffler. Not sure how much more advantage you gain by placing the cutout in the I-pipe, but for me I gained 6 rwhp and cant recall the tq (more than the hp change) open vs closed for the e-cutout in the plate location.

stroked383HSR

iTrader: (12)

nice car bud! thx for the pictures. hey you got a sound clip? open vs closed?

Im like the gains also. Im in the market for one right now....gonna do it all at the same time i install the headers and get a dyno tune. so my gains vs where im at now should be very noticeable.

high impact

iTrader: (5)

I have this same borla system on my 00 formula with long tube headers. I have been running it open and it's too loud and annoying for just cruising. I don't have the cutout yet - it had the wide open restrictor plate in it and tonight I installed the closed plate - I love the sound with it blocked but I also want both options with the press of a switch so I am planning on installing a cutout this winter.

I compared the restrictor plate while I had it out with a standard 3 inch header collector gasket I had laying around and the holes are off just a tad. I assume I will have to purchase a cut out specifically made for the borla.

stroked383HSR

iTrader: (12)

is the DMH 3" the only one that fits correctly on the Borla (where the plate goes)

Cause i read somewhere that it (DMH) measures 2 3/4" ...so is there any restrictions with the smaller opening? vs the borla tubing?

Schweet97Z

iTrader: (35)

A QTP will work. Im running a regular 3" DMH with no issues on my Borla

stroked383HSR

iTrader: (12)

thats all I needed to hear!

I would like to hear a sound clip of the car ^^^^ ....that would be great!

peterlawl84

iTrader: (12)

Sorry no sound clips of the car. But its Kooks LTs, catted y, borla catback. H&C made a huge difference in sound (before it, I was running just the open plate, after the install it was way too loud for cruising or just for the neighborhood...cops were always watching me go by anywhere I went)

stroked383HSR

iTrader: (12)

well crap...its all good
thats funny about the cops watchin you go by. I know what you mean cause i had the borla with an open plate on my 87 383 stroked camaro with AFR's and cammed.

I'll be running Edelbrock LT's with no cats....into the borla....thats why Im getting the cutout.

Ive never heard a borla capped all the way...so im wondering what it sounds like with the cutout closed.

peterlawl84

iTrader: (12)

Closed is nice because its just a slight rumble at idle, but almost like stock, still louder than stock at WOT, just less stares Good luck with your install